MC34161, MC33161,
NCV33161
Universal Voltage Monitors
The MC34161/MC33161 are universal voltage monitors intended
for use in a wide variety of voltage sensing applications. These devices
offer the circuit designer an economical solution for positive and
negative voltage detection. The circuit consists of two comparator
channels each with hysteresis, a unique Mode Select Input for channel
programming, a pinned out 2.54 V reference, and two open collector
outputs capable of sinking in excess of 10 mA. Each comparator
channel can be configured as either inverting or noninverting by the
Mode Select Input. This allows over, under, and window detection of
positive and negative voltages. The minimum supply voltage needed
for these devices to be fully functional is 2.0 V for positive voltage
sensing and 4.0 V for negative voltage sensing.
http://onsemi.com
MARKING
DIAGRAMS
8
MC3x161P
AWL
YYWWG
PDIP−8
P SUFFIX
CASE 626
Applications include direct monitoring of positive and negative
voltages used in appliance, automotive, consumer, and industrial
equipment.
1
1
8
SOIC−8
D SUFFIX
CASE 751
3x161
ALYW
G
Features
• Unique Mode Select Input Allows Channel Programming
• Over, Under, and Window Voltage Detection
• Positive and Negative Voltage Detection
• Fully Functional at 2.0 V for Positive Voltage Sensing and 4.0 V
for Negative Voltage Sensing
1
1
8
Micro8t
DM SUFFIX
CASE 846A
x161
AYW G
G
• Pinned Out 2.54 V Reference with Current Limit Protection
• Low Standby Current
1
• Open Collector Outputs for Enhanced Device Flexibility
• NCV Prefix for Automotive and Other Applications Requiring Site
and Control Changes
1
x
A
= 3 or 4
= Assembly Location
WL, L = Wafer Lot
YY, Y = Year
WW, W = Work Week
• Pb−Free Packages are Available
V
CC
G or G = Pb−Free Package
8
(Note: Microdot may be in either location)
1
7
2
2.54V
Reference
PIN CONNECTIONS
V
S
V
1
2
3
4
8
7
6
5
V
CC
ref
−
+
Input 1
Input 2
GND
Mode Select
Output 1
6
5
+
2.8V
+
−
+
+
Output 2
1.27V
−
(TOP VIEW)
+
+
3
0.6V
+
−
ORDERING INFORMATION
1.27V
See detailed ordering and shipping information in the package
dimensions section on page 15 of this data sheet.
4
This device contains
141 transistors.
Figure 1. Simplified Block Diagram
(Positive Voltage Window Detector Application)
© Semiconductor Components Industries, LLC, 2006
1
Publication Order Number:
June, 2006 − Rev. 9
MC34161/D